Bookkeeping machine



Nov. 13, 1934. J. H. MECKEL, JR

BOOKKEEPING MACHINE Filed Dec. 22, 1928 3 Sheets-Sheet 1 Nov. 13, 1934.J. H. MECKEL. JR

BOOKKEEPING MACHINE Filed DeC. 22, 1928 3 Sheets-Sheet 5,

-LlllallLlll lllllllll Patented Nov. 13, 1934 UNITED STATES,

yPAA'friszN'r OFFICE` 2 Claims.

ently present in known machines of the character mentioned.

Another important object of the invention resides in the provision of abookkeeping machine wherein the combination of the typewriting andcalculating machines are effected by simple means, thus reducing thepossibilities of inoperativeness due to breakage of unnecessary parts.

Still another object of the invention contemplates the provision of acombined typewriter and calculating machine, having a common carriage,in order that either the typewriter or calculating machine may be usedat will and at any time to perform workon any portion of the sheet,without the necessity of changing the position of the sheet in thecarriage.

The invention further aims to provide a combined typewriter andcalculating machine having a common carriage, and wherein is embodied asimpliedmechanism associated with said carriage for permitting the rapidadaptation of the latter to the work of the typewriter or of thecalculating machine, respectively; said simplified mechanism beingcapable of readily setting the carriage for operation or to disable thesame, dependent upon whether it is desired that the carriage shouldtravel step by step for text work, or

sons skilled in the art, I have in theaccompany ing drawings and in thedetailed description based thereupon, set out a possible embodiment ofthe same.

In these drawings:

Figure v1 is a cross section of my improved device Vtaken on line 1-1 ofFigure 2 in the direction indicated by the arrow a;

Figure 2 is a rear elevation of the device;

Figure 3 is a plan of the same;

Figure 4 is an enlarged detail of the feed-gear mechanism embodied inthe invention, and

Figure 5 is a rear elevation of the same.

Referring more particularly to the accompanying drawings wherein likecharacters of reference will designate corresponding parts throughout, I

(Cl. 23S-58),

have shown the invention in the form of a combined typewriter andcalculating machine. Obviously, augreat number of adding machines ortypewriters may also be combined, the only necessary requirement beingthat all machines possess a common carriage.

The typewriter 1 is placed beside the calculating machine 2 with noconnection therebetween except that both machines have a common platenand carriage 3. The movement of the platen 3, may be controlled by meansof a guide rule or tabulator, feed rod or similar tting 4 in the mannerwell known in the art.

The feed rule 4 or the like may carry pins 5 adapted to come in contactwith suitable carriage stopping means provided upon ordinary typewritingmachines, to stop the carriage and platen 3 when working with thecalculating machine 2. Should the writing area of the bookkeeping formcome into the working column of the typewriter, the latter can beshifted and stopped in proper position by manual operation or by meansof the pins 5.

In the machine illustrated in the drawings, an arrangement for manualshifting is shown, and for that purpose the machine is provided with adepressable key 8 connected to one end of a rocking lever 6 pivotallysupported on pivot 7. The key 8 is formed with a notch 9 engageable witha catch 10 to lock said lever 6 in operative position.

The other end 11 of the lever 6 extends within a slot 12 formed at thelower extremity of a hollow standard 13 wherein is received a pin 14free to slide up and down in said hollow standard. The lower end of thepin 14 rests upon the ad- 90 jacent end of the rocking lever 6, and dueto its own weight, is maintained in close contact with said lever.

The free upper end of the pin 14 carries a roller 15 disposed beneaththe feed rule 4, and 95. adapted to be brought in contact with the sameto guide the movement thereof and consequently that of the carriage, andto raise said feed rule, thereby throwing the stop pins 5 out ofoperative range.

Secured to the lever 6 between its pivotal point and that end portionreceived in the guide memengagement with the feed wheel upon restorationu.

los i of the member 17 and associated parts to their normal position. v

As more clearly shown in Figure 4 of the draw ings, the pawl 20 ismounted opposite the feed nger 22 actuated by means of the rod 23connected to the ordinary mechanism of the typewriter for operation bythe keys thereon. The ratchet or feed wheel 21 carries a pinion 24 whichengages the rack 25 of the carriage for moving lthe same.

While using the calculating machlne,-the rock ing lever 6 is in theposition shown in the drawings, and therefore, the pawl 20 is moved outof engagement with the feed wheel 21, thus freeing the same to turn ineither direction and rendering it without action upon the machine duringthe lreturning of the carriage or during its cessation out of operativerange. Simultaneously with this movement, the finger 16 will be raised,pivoting the lever 17 so that its end 19 acting upon the pawl 20 causesthe same to engage the feed or ratchet wheel 21, thereby permitting thelatter to move in one direction only, so that the machine may nowfunction as a typewriter. On -finishing the typing, it is then onlynecessary to release the key 8 by disengaging the same from the catch10, and the carriage is thereupon placed in readiness for furthercalculation work in the manner hereinbefore described. Y

Manifestly, the construction herein shown is capable of considerablemodification and such modications as come within the scope of my claims,I consider within the Aspirit of my inven- K tion.

I claim:

1. In a' bookkeeping machine of the character described comprising atypewriter and a calculating machine disposed side by side and eachadapted to form impressions upon the same sheetl of paper, a singlemovable carriage and a. platen mounted on said carriage and adapted tocarry said sheet, feed mechanism for said carriage, the

combination of means mounted adjacent said feed mechanism and adapted toengage the latter to prevent retrograde movement of said feedingmechanism during operation of said typewriter, means for retaining saidfirst-named means out of contact with said feeding mechanism duringoperation of said calculating machine, means on determined positionduring operation of said calculating machine, and movable key meansoperatively associated With said first named means and adapted, upondepression, to' simultaneously move said positioning means out ofoperative position and said first named ,means into engagement with saidfeeding mechanism, said key means being further adapted, upon returnfrom depressed position to original position, to simultaneously restoresaid positioning means and said first named means to their originalpositions.

2. In a bookkeeping machine of the character described comprising atypewriter and a calculating machine disposed side by side and eachadapted to form impressions on a sheet of paper, a single movablecarriage and a platen mounted on the latter and adapted to support saidsheet, feed mechanism for said carriage, the combination of a fingerpivotally mounted adjacent said feed mechanism and adapted to enter intoengagement with said mechanism to prevent retrograde movement thereofduring operation of the typewriter, means for retaining said finger outof contact with said feed mechanism during operation of said calculatingmachine, said means including a system of levers, one of which is incontact with said finger, a movable guide rule provided with means forpositioning said carriage and associated platen in predeterminedposition during operation of said calculating machine, a depressible keyconnected to said system of levers and adapted, upon depression, tosimultaneously move said positioning means out of operative position'andsaid finger into engagement with said feeding mechanism, said key beingfurther adapted, upon return from depressed position to originalposition, to simultaneously move said positioning means into operativeposition and said

